Correct scope for spring beans on Rest Service - spring

Question

I'm creating a REST service using RestEasy and Spring 4.
The service is basically an endpoint for a complex batch process. So clients call the service passing a bunch of parameters and then the processing is triggered.
As there are many parameters that are initially passed to the service, and those parameters are used pretty much everywhere in the system, I've chosen to create a 'helper' bean that will hold the parameters, then every other bean can autowire the 'parameter bean' and use it.
example:
the url called by the client would be: http://localhost/rest/service/execute?processType=A&initialDate=20141220&finalDate=20141231......
The REST Service endpoint would be something like:
#Path("/service")
public class RESTService {
#Autowired
private RequestParams params;
#Autowired
private ProcessOrchestrator orchestrator;
#POST
#Path("/execute")
#Produces(MediaType.TEXT_PLAIN)
public Response executa(
#NotNull #QueryParam("processType") String processType,
#NotNull #QueryParam("initialDate") String initialDate,
#NotNull #QueryParam("finalDate") String finalDate,
...
) {
params.setProcessType(processType);
params.setInitialDate(initialDate);
params.setFinalDate(finalDate);
orchestrator.triggerBatchProcess();
}
}
The RequestParams bean will only hold the parameters values:
#Component
public class RESTService {
private String processType;
private String initialDate;
private String finalDate;
...
// getters and setters
}
And the other beans would #Autowire the params bean and use its parameters:
#Component
public class DataProcessor {
#Autowire
private RequestParams params;
//...
}
#Component
public class DataConverter {
#Autowire
private RequestParams params;
//...
}
#Component
public class FileWritter {
#Autowire
private RequestParams params;
//...
}
The design looks correct, right? Now, my concern is: how do I make sure that a new RequestParams instance is created every time the service is called? Do I need to declare a scope ("request" for instance) for all my beans?